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| author |   Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-12-09 19:53:08 +0100 |
|---|---|---|
| committer |   Sumit Semwal <sumit.semwal@linaro.org> | 2016-12-13 17:53:32 +0530 |
| commit | 0959a1683d78270bab6381d498707fb8655ae11c (patch) | |
| tree | fdadda6d04dc830b974624e5f890462a81b52365 /Documentation/driver-api | |
| parent | dma-buf: Reorganize device dma access docs (diff) | |
| download | linux-dev-0959a1683d78270bab6381d498707fb8655ae11c.tar.xz linux-dev-0959a1683d78270bab6381d498707fb8655ae11c.zip | |
dma-buf: Update cpu access documentation
- Again move the information relevant for driver writers next to the
callbacks.
- Put the overview and userspace interface documentation into a DOC:
section within the code.
- Remove the text that mmap needs to be coherent - since the
DMA_BUF_IOCTL_SYNC landed that's no longer the case. But keep the text
that for pte zapping exporters need to adjust the address space.
- Add a FIXME that kmap and the new begin/end stuff used by the SYNC
ioctl don't really mix correctly. That's something I just realized
while doing this doc rework.
- Augment function and structure docs like usual.
Cc: linux-doc@vger.kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
[sumits: fix cosmetic issues]
Link: http://patchwork.freedesktop.org/patch/msgid/20161209185309.1682-5-daniel.vetter@ffwll.ch
Diffstat (limited to 'Documentation/driver-api')
| -rw-r--r-- | Documentation/driver-api/dma-buf.rst | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/driver-api/dma-buf.rst b/Documentation/driver-api/dma-buf.rst index 906d1532efad..92e417035e16 100644 --- a/Documentation/driver-api/dma-buf.rst +++ b/Documentation/driver-api/dma-buf.rst @@ -52,6 +52,12 @@ Basic Operation and Device DMA Access .. kernel-doc:: drivers/dma-buf/dma-buf.c :doc: dma buf device access +CPU Access to DMA Buffer Objects +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. kernel-doc:: drivers/dma-buf/dma-buf.c + :doc: cpu access + Kernel Functions and Structures Reference ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |